2-Chloro-3-cyano-6-(trifluoromethoxy)pyridine-4-sulfonyl chloride
3-Bromo-2-(fluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine
2-Chloro-3-cyano-4-(trifluoromethoxy)pyridine-6-sulfonyl chloride
2-Bromo-5-nitro-4-(trifluoromethoxy)pyridine-3-acetic acid